BAT54-7

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Discontinued at Digi-Key
Diode Type:	Schottky
Voltage - DC Reverse (Vr) (Max):	30V
Current - Average Rectified (Io):	200mA (DC)
Voltage - Forward (Vf) (Max) @ If:	800mV @ 100mA
Speed:	Small Signal =
Reverse Recovery Time (trr):	5ns
Current - Reverse Leakage @ Vr:	2µA @ 25V
Capacitance @ Vr, F:	10pF @ 1V, 1MHz
Mounting Type:	Surface Mount
Package / Case:	TO-236-3, SC-59, SOT-23-3
Supplier Device Package:	SOT-23-3
Operating Temperature - Junction:	-65°C ~ 150°C
Base Part Number:	BAT54

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Diodes - Rectifiers - Single

The BAT54-7 is a form of single, low-voltage, high-current, fast-switching diode. It is typically used in protecting circuits from transient surges, rectifying, switching power, and controlling power transients in power supplies and other electrical applications. This diode has an average rectified current rating of 200mA, with a maximum of 800mA.

General Characteristics

The BAT54-7 has a reverse breakdown voltage of about 65 volts, with a total capacitance of about 17pF. It has an operating temperature range of -20 to +85 degree Celsius, and a storage temperature range of -25 to +90 degree Celsius. It is also marked with the symbol “V” which indicates its voltage rating.

Types

The BAT54-7 is available in two types: single and dual. The single type has a forward drop of 200mV, while the dual type has a forward drop of 400mV.

Applications

The BAT54-7 can be used in a variety of applications, including protecting circuits from transient surges, rectifying current, switching power, protecting power-supplies, and controlling power transients. It is also used in circuits involving low-voltage, high-current operations, such as LED and LCD displays, LCD backlights, LED drivers, LED lighting systems, automotive displays, audio power amplifiers, motor drives and switching power supplies.

Working Principle

The working principle of a diode can be broken down into three distinct parts: Forward Bias, Reverse Bias, and Avalanche Breakdown.

Forward Bias

When a diode is forward biased, the voltage applied to it causes the electrons in the material to move from the n-region to the p-region, creating a current flow through the diode. This is known as the forward conduction mode. The voltage at which this happens is known as the forward voltage.

Reverse Bias

When a diode is reverse biased, it acts as an insulator, preventing the current from flowing through it. This is known as the reverse blocking mode. The voltage at which this happens is known as the reverse breakdown voltage.

Avalanche Breakdown

When a diode is reverse biased beyond its breakdown voltage, the electric field in the junction increases, causing the electrons to accelerate, quickly generating a large amount of charge carriers in the diode. This phenomenon is known as avalanche breakdown. The voltage at which this happens is known as the avalanche breakdown voltage.

Conclusion

The BAT54-7 is a low-voltage, high-current, fast-switching, single or dual diode commonly used in protecting circuits from transient surges, rectifying current, switching power, protecting power supplies and controlling power transients. It has a reverse breakdown voltage of about 65 volts, an operating temperature range of -20 to +85 degree Celsius, and a storage temperature range of -25 to +90 degree Celsius. It is widely used in low-voltage, high-current operations, such as LED and LCD displays, LED drivers, LED lighting systems, and power supplies.

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